Htkstaht



- UNITED sTATEs PATENT oEEIoE.

1 HENRYwHITNEY, JR., 0El CAMBRIDGE, MASSACHUSETTS.

INKSTAND.

Speccation of Letters Patent No. 8,188, dated July 1, 1851.

`such parts as Iclaim and desire to have secured to me by LettersPatent.A

The figures of` the accompanying plate of .drawings represent myimprovements.

Figure l is a plan of my improved inkstand, and Fig. 2 is a transversevertical section taken in the plane of the line, A B, Fig.1.

The distinguishing features of my improvements are the combination of anelast-ic t diaphragm operatedby a thumb Screw working in a metallic cap`fitted over the neck of the fountain of the inkstand with thedeliveringmcup and its tube (extending into said fountain through anindependent opening in the topof said fountain); and the providing asunken area about the opening for the tube of the delivering cup, sothatif the ink overflows in said cup, it will be received in said area, andby raising the tube of the cup, be permitted to flow back again into thefountain. p

a a a` a is the fountain of the inkstand which maybe formed of glass orany other` desirable material, having a neck or open-` mg at b throughwhich the elastic diaphragm C, Fig. `2, works up and` down. Thisdiaphragm isformed or arranged by tying the center of an india-rubberwasher, @Z al, round a groove formed about the metallic button, `e, theexterior of said circular A i washer being conned in a groove round theexterior of the metallic socket, f, as shown in Fig. 2, which socket isformed as shown In said figure, and is fastened with cement atg and it,about the neck, b Z9, of the fountain, so as to make the wholearrangement air-tight, and leave a space at the center for the verticalplay ofthe diaphragm C. ,i

A` metallic cap, i i, is screwed around the lower edge of the socket, ff, and has at its center a thumb screw, 7c, the lower part of `which isconnected to the diaphragm C, and.

moves it up and down, as will be readily i understood b-y inspection ofFig. 2.

The delivering cup, Z, with-its tube,

i formed in the ordinary way, the` latter passi ing through anindependent hole in the side of the top of the fountain and extendingnearly to the botom of` said fountain; and It will be readily seen thatthe depressing of the elasticdiaphragm about the neck of the t fountainby the screw, la, will condense the" `air in the fountain, and make itpress the ink into the cup, and by liftingjthe washer `the contraryeiect will ensue, and the ink pass back fro-m the cup to the fountain.`

There is a crescent shaped area, a n, about the cup, Z, which has a rim,0 o, about it,

and whose bottom curves, or inclines towardthe hole in which the tube,m, of said i cup, fits;` so that any ink which is overflowe-d from saidcup, may be permitted to pass back into the fountain by merely liftingthe i tube, m.

I do not claim diaphragm` for inkstands; but

`I claim my inkstand as a new article of manufacture, -in which thefollowinor features are for the first time associated, viz:

An elastic diaphragm covered and secured from linjury by a metallic cap,and regulated by a screw passing through the cap, and in the' inventionof the elastic i combination with the diaphragm the funt nel stop Z` andwaste cup n..`

i i HENRY WHITNEY, J n.

`Witnesses: .e

`EzrA LINCOLN, i FRED. WM, THAYEB,

